dependency-properties

问题 I want create a custom control for Numeric Text box with dependency property in WPF , in my solution , I add one WPF application and custom control (WPF) ,then in public class , I create dependency property .... Now I don't know how can i write my rule for text box and which event is true? Another question : What is my rule for numeric text box , that this text box must be give number and . and Separating .this custom Text box is for accounting system. public static readonly

问题 How to make an array of dependency object properties bindable for later binding as a static resource? The code I have now, it seems that my DependencyObject bypasses the dependency property system... I have the following class: public class ValueMarker : DependencyObject { public static readonly DependencyProperty BrushProperty = DependencyProperty.Register("Brush", typeof(Brush), typeof(ValueMarker), new FrameworkPropertyMetadata(Brushes.Aqua)); public static readonly DependencyProperty

问题 Does anyone know how to determine if the value of a WPF property is inherited? In particular, I'm trying to determine if the DataContext of a FrameworkElement was inherited from the parent or set directly on the element itself. 回答1: DependencyPropertyHelper.GetValueSource will give you a ValueSource, which includes a property for retrieving the BaseValueSource. The BaseValueSource enumeration tells you where the DependencyProperty is getting its value from, such as inherited from parent, set

问题 MSDN says, Each binding typically has these four components: a binding target object, a target property, a binding source, and a Path to the value in the binding source to use. For example, if you want to bind the content of a TextBox to the Name property of an Employee object, your target object is the TextBox, the target property is the Text property , the value to use is Name, and the source object is the Employee object. The target property must be a dependency property. The above excerpt

问题 I created UserControl with viewmodel. It has DependencyProperty which only works if the value is passed directly. If the value is passed through the binding, it no longer works. Here is the view code: This is a closed element not associated with any other. All listed items belong to him. This is a code shortening, I am not going to present whole, immeasurable structures. View public partial class SomeView : UserControl { public SomeView() { InitializeComponent(); SetBinding(ActiveProperty,

问题 I created UserControl with viewmodel. It has DependencyProperty which only works if the value is passed directly. If the value is passed through the binding, it no longer works. Here is the view code: This is a closed element not associated with any other. All listed items belong to him. This is a code shortening, I am not going to present whole, immeasurable structures. View public partial class SomeView : UserControl { public SomeView() { InitializeComponent(); SetBinding(ActiveProperty,

问题 Consider this very simple example where I have a UserControl like this: UserControl XAML: <UserControl x:Class="BindingTest.SomeControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="SomeControlElement"> <Grid> <TextBlock Text="{Binding ElementName=SomeControlElement, Path=Counter}" /> </Grid> </UserControl> Code Behind: using System; using System.Windows; using System.Windows.Controls; using System.Windows

问题 I've created a style for a new WPF Window class and have some dependency properties on there. The one to note is ShowHelpButton This is supposed to toggle the visibility of the Help button on the window. The code works fine in runtime, but I cannot get it to update the UI in the design view. Here's the class: public class MainWindowFrame : Window { #region DependencyProperties public static readonly DependencyProperty ShowHelpButtonProperty = DependencyProperty.Register( "ShowHelpButton",

问题 I've created a style for a new WPF Window class and have some dependency properties on there. The one to note is ShowHelpButton This is supposed to toggle the visibility of the Help button on the window. The code works fine in runtime, but I cannot get it to update the UI in the design view. Here's the class: public class MainWindowFrame : Window { #region DependencyProperties public static readonly DependencyProperty ShowHelpButtonProperty = DependencyProperty.Register( "ShowHelpButton",

问题 I using spring boot multiple modules and i want inherit application.properties from parent . I have parent module : spring-ecommere-demo and sub module : model , core and security. In parent modules i put some config jdbc look like : application.properties (parent module) spring.datasource.url=jdbc:mysql://localhost:3306/BaoTrung spring.datasource.username=root spring.datasource.password=123456 spring.jpa.show-sql=true And in sub module security i specific config look like: application